Improved steam-generator



UNTTED STATas PATENT OFFICE.

BENJAMIN GILXRVEY, OF NEY YORK, ASSIGNOR TO HIMSELF AND JOSEPH B. DAYOL,OF BROOKLYN, NElV YORK.

IMPROVED STEAM-GENERATOR.

Specification forming part of, Letters Patent No. 29,217, dated July 17,1860.

To all whom it may concern.-

Be it known that I, BENJAMIN GARvEY, of the city, county, and State ofNew York, have invented a new and Improved Form of and Mode of lVorkinga Steam-Generator; and I do hereby declare the following to be a full,clear, and exact description of the form of and mode of working same,reference being had to the accompanying drawings, making a part of thisspecification, in whichi A is a couple or cell formed of two thin sheetsof metal riveted together with rivets so close one to an other thatthese two thin sheets of metal or sides of a couple are held togetherwith a greater force than the steam to be generated between them iscalculated to exert. The space between the sides of any couple issufficient to receive a thin iilm only of water or of steam, and thethickness of the sheets of metal which I select to form the sides of acouple is the least which will give adequate strength; also, the metalwhich I select for these thin sheets is the best conductor of heat whichany given circumstances will allow, in order that the water or steamwithin the couple may be in as direct and intimate connection with thesource of heat as possible.

B represents a force-pump, which for illustrations sake is given as arepresentative of any and every means of forcing water into the couple,and for the same reason is shown in direct connection with one couple.

C is the suction pipe of the forcepump, by which the lat-ter draws waterfrom a condenser, tank, or other source of supply.

D is a pipe by which the steam passes off for use.

To enable others skilled in the arts to make and use my invention,Idescribe its construction and operation, as follows:

To form one couple, I take two thin sheets of metal and secure themaround the edges by any of the well-known devices for that purpose,leaving an opening at one corner for an inlet-pipe and another openingat another corner for an outlet-pipe. I then rivet the two sides of thecouple together with rivets at short distances apart, for common useselecting one inch as the measure of such distance. I arrange one orseveral such couples in the smoke-box of a furnace, vertically,horizontally, or at any angle with the horizon. I next lVhen a charge ofwater is thrown by a forcepump, or any equivalent means, into onecouple, or into several couples at the same time, the cock or otherwell-known device for such purpose is so turned that the connectionbetween the feed-pipe and the charged couple or couples is broken also,the cock or other equivalent device through which the couple or couplesis connected with the steam-pipe is turned, so as either to make ofbreak the connection, as may be desired, so that the steam generatedwithin the couples may pass olf as fast as it is formed, or may be helduntil itis superheated to any degree desired. The means whereby thesecocks are operated is not shown, because there is no one way which willanswer under all circumstances, and there are several ways of operating`cocks or equivalent devices which will answer for all cases inpractice; also, when the steam is intended to pass off as rapidly as itis generated, there is no steam or water cock required-only a regulatedfeed of water; but in no case do I employ a reservoir of steam or of hotwater. In working a steam engine the couple o1' couples which are at anytime put in connection with the cylinder are entirely emptied byonestroke of the piston, and to generate a fresh charge of steam by thesame couple or couples another charge of water is injected by theforce-pump, &c. The object of using more couples at one time is merelyto enable a generator of small size to be employed for supplying a largecylinder with steam, or to allow suflicient time to the charge of waterin any couple to be heated sufficiently before being converted intoworking-steam.

I do not confine myself to the specific form herein described, butsometimes form a couple by means of tubes of very small bore and lVhat Iclaiin as my invention, and desire to secure by Letters Patent, is-

The form of steam-generator herein sub'- stantially described, whenemployed as Specied.

BENJAMIN GARVEY.

Vitnesses:

WM. H. VAN VooRHis, GEO. XV. BANTA, Jr.

